Carbon brush structure facilitating replacement

Abstract

The utility model provides a kind of carbon brush structure convenient to replace belongs to motor technical field, to solve the problem of greater difficulty of carbon brush replacement.The utility model's carbon brush structure convenient to replace includes carbon brush body and carbon brush support.Carbon brush body includes clamping structure and connecting wire on it.The free end of connecting wire is equipped with connector.Joint is equipped with clamping groove.Carbon brush support includes fixed part, mounting ring and limiting structure on it.Fixed part is equipped with socket.Mounting ring's side wall is equipped with limit port.Limiting structure is set in limit port in telescopic.Carbon brush body is installed on fixed part, and clamping structure is telescopic and clamped in socket.Joint is inserted in mounting ring, and clamping groove corresponds with limit port.Limiting structure is inserted into mounting ring by limit port, and clamped in clamping groove, to fix joint in mounting ring.The utility model can realize the tool-free quick disassembly of carbon brush body, improve replacement efficiency and convenience, avoid delay caused by tool loss.

Description

Technical Field

[0001] This utility model belongs to the field of motor technology, specifically relating to a carbon brush structure that is easy to replace. Background Technology

[0002] Carbon brushes are a key component in electric motors and other rotating equipment, playing a vital role in conductivity and commutation. They are widely used in various motors, generators, power tools, and other devices. Due to their excellent conductivity and wear resistance, carbon brushes have become indispensable parts in these devices. When carbon brushes become severely worn, cracked, or exhibit sparking, they need to be replaced. Currently, replacing carbon brushes in most motors requires disassembling the entire carbon brush structure, which is very inconvenient. Some motors allow for the separate removal of the carbon brush body, but tools are still required for assistance, making the process less convenient and cumbersome. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is to provide a carbon brush structure that is easy to replace, which can realize tool-free quick disassembly and assembly of the carbon brush body, improve replacement efficiency and convenience, and avoid delays caused by lack of tools.

[0004] To address the aforementioned problems, this utility model provides an easily replaceable carbon brush structure, comprising: a carbon brush body and a carbon brush holder. The carbon brush body includes a snap-fit ​​structure and a connecting wire. A connector is provided at the free end of the connecting wire. A slot is provided on the connector. The carbon brush holder includes a fixing part, a mounting ring, and a limiting structure. A latch is provided on the fixing part. A limiting opening is provided on the side wall of the mounting ring. The limiting structure is retractably disposed within the limiting opening. The carbon brush body is mounted on the fixing part, and the snap-fit ​​structure retractably snaps into the latch. The connector is inserted into the mounting ring, and the slot corresponds to the limiting opening. The limiting structure extends into the mounting ring through the limiting opening and snaps into the slot to fix the connector in the mounting ring.

[0005] The limiting structure includes a guide rail assembly, a positive and negative lead screw, and a pair of pressing blocks. The guide rail assembly is connected to the mounting ring and located on the side where the limiting opening is located. The pair of pressing blocks are slidably disposed in the guide rail assembly. The positive and negative lead screws are connected to the pair of pressing blocks via a threaded engagement. Rotating the positive and negative lead screws can drive the pair of pressing blocks to move closer or further apart along the guide rail assembly. When the pair of pressing blocks move closer together, the top of the pressing blocks can extend through the limiting opening into the mounting ring and engage in the slot.

[0006] The guide rail assembly includes a pair of support plates and a pair of guide rails. The support plates are respectively connected to the end faces of both ends of the mounting ring. The top of the support plates is arc-shaped, conforming to the curvature of the inner wall of the mounting ring. The top of the support plates is flush with the inner wall of the mounting ring. The pair of guide rails are respectively and symmetrically disposed on the pair of support plates. An extrusion block is disposed between the pair of support plates. Sliding grooves are provided on opposite sides of the extrusion block. The extrusion block is connected to the pair of guide rails through the sliding grooves.

[0007] The top surface of the extrusion block is inclined and has a certain curvature. The top surface of the extrusion block is adapted to the shape of the slot.

[0008] The positive and negative lead screws are equipped with knobs at both ends. The knobs have an anti-slip layer on their surfaces.

[0009] The snap-fit ​​structure includes a mounting hole, a locking element, and a spring. The mounting hole is located on the side of the carbon brush body. The locking element is retractably mounted in the mounting hole. The spring is located in the mounting hole and connects the locking element to the bottom of the mounting hole. Supported by the spring, the locking element protrudes from the mounting hole and snaps into the snap-fit ​​mechanism.

[0010] The snap-fit ​​structure also includes a strong magnetic plate. The snap-fit ​​bead is made of metal. The strong magnetic plate is detachably located at the end of the snap-fit ​​opening furthest from the carbon brush body. The strong magnetic plate attracts the snap-fit ​​bead into the mounting hole.

[0011] The fixing part includes a support arm, a fixing frame, and a drive device. One end of the support arm is hinged to the carbon brush holder via a pivot. The fixing frame is located at the end of the support arm away from the carbon brush holder. A bayonet is provided on the side wall of the fixing frame. The carbon brush body is mounted in the fixing frame. The drive device is connected to the support arm. The drive device can drive the support arm to rotate around the pivot between a first position and a second position. When the support arm is in the first position, the carbon brush body abuts against the slip ring. When the support arm is in the second position, the carbon brush body moves away from the slip ring.

[0012] The carbon brush body includes: brush blocks and brush bodies connected to each other. The end of the brush block furthest from the brush body is used to contact the slip ring. The snap-fit ​​structure and connecting wires are located on the brush body.

[0013] The connector is cylindrical. Its outer diameter matches the inner diameter of the mounting ring. A slot is located on the side of the connector. Connecting wires are attached to the end face of the connector.

[0014] Beneficial effects:

[0015] The easily replaceable carbon brush structure provided by this utility model includes a carbon brush body and a carbon brush holder. The carbon brush body includes a snap-fit ​​structure and a connecting wire, with a connector on the free end of the connecting wire. The carbon brush holder includes a fixing part, a mounting ring, and a limiting structure, with a limiting opening on the side wall of the mounting ring. The snap-fit ​​structure is retractably mounted on the carbon brush body, fixing the carbon brush body to the fixing part through the engagement of the snap-fit ​​structure and the locking opening. This effectively secures the carbon brush body and facilitates its disassembly and installation. The limiting structure is retractably located in the limiting opening, fixing the connector to the mounting ring through the limiting structure. This facilitates current conduction and also allows for easy installation and disassembly of the connector. The easily replaceable carbon brush structure provided by this utility model enables tool-free, quick assembly and disassembly of the carbon brush body and the carbon brush holder, significantly improving carbon brush replacement efficiency and reducing the difficulty of carbon brush assembly and disassembly. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of an easily replaceable carbon brush structure according to an embodiment of the present invention;

[0017] Figure 2 A schematic diagram of the structure of a carbon brush holder according to an embodiment of this utility model;

[0018] Figure 3 A schematic diagram of the structure of a carbon brush body according to an embodiment of this utility model;

[0019] Figure 4 A schematic diagram of the limiting structure provided in one embodiment of this utility model;

[0020] Figure 5 for Figure 4 A structural decomposition diagram;

[0021] Figure 6 This is an exploded view of the snap-fit ​​structure of one embodiment of the present invention.

[0022] The reference numerals in the attached figures are as follows:

[0023] 1. Carbon brush body; 2. Snap-fit ​​structure; 3. Connecting wire; 4. Connector; 5. Carbon brush holder; 6. Fixing part; 7. Mounting ring; 8. Limiting structure;

[0024] 11. Brush body; 12. Brush block;

[0025] 21. Mounting hole; 22. Clip; 23. Spring; 24. Strong magnetic plate;

[0026] 61. Bayonet; 62. Support arm; 63. Fixing frame; 64. Rotating shaft;

[0027] 71. Limiting port;

[0028] 81. Guide rail assembly; 82. Positive and negative lead screws; 83. Extrusion block;

[0029] 811. Support plate; 812. Guide rail;

[0030] 821. Knob;

[0031] 831. Slide groove. Detailed Implementation

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0036] Figure 1 This is a three-dimensional structural diagram of a carbon brush structure that is easy to replace, as provided in this embodiment.

[0037] like Figure 1As shown, the replaceable carbon brush structure of this embodiment includes: a carbon brush body 1 and a carbon brush holder 5. The carbon brush body 1 includes a snap-fit ​​structure 2 and a connecting wire 3. A connector 4 is provided on the free end of the connecting wire 3. A slot is provided on the connector 4. The carbon brush holder 5 includes a fixing part 6, a mounting ring 7, and a limiting structure 8. A notch 61 is provided on the fixing part 6. A limiting opening 71 is provided on the side wall of the mounting ring 7. The limiting structure 8 is retractably disposed in the limiting opening 71. The carbon brush body 1 is mounted on the fixing part 6, and the snap-fit ​​structure 2 is retractably snapped into the notch 61. The connector 4 is inserted into the mounting ring 7, and the slot corresponds to the limiting opening 71. The limiting structure 8 extends into the mounting ring 7 through the limiting opening 71 and snaps into the slot to fix the connector 4 in the mounting ring 7.

[0038] The replaceable carbon brush structure of this embodiment includes a carbon brush body 1 and a carbon brush holder 5. The carbon brush body 1 includes a snap-fit ​​structure 2 and a connecting wire 3, with a connector 4 at the free end of the connecting wire 3. The carbon brush holder 5 includes a fixing part 6, a mounting ring 7, and a limiting structure 8, with a limiting opening 71 on the side wall of the mounting ring 7. The snap-fit ​​structure 2 is retractably mounted on the carbon brush body 1, and the carbon brush body 1 is fixed to the fixing part 6 through the engagement of the snap-fit ​​structure 2 and the locking opening 61, effectively fixing the carbon brush body 1 and facilitating its disassembly and installation. The limiting structure 8 is retractably mounted in the limiting opening 71, and the connector 4 is fixed to the mounting ring 7 through the limiting structure 8, enabling current conduction and facilitating the installation and disassembly of the connector 4. This replaceable carbon brush structure of this embodiment enables tool-free quick assembly and disassembly of the carbon brush body 1 and the carbon brush holder 5, significantly improving carbon brush replacement efficiency and reducing the difficulty of carbon brush assembly and disassembly.

[0039] Figure 4 This is a schematic diagram of a limiting structure 8 provided in this embodiment. Figure 5 for Figure 4 A structural decomposition diagram. Among them, such as... Figure 1 , Figure 4 , Figure 5 As shown, the limiting structure 8 includes: a guide rail assembly 81, a positive and negative lead screw 82, and a pair of pressing blocks 83. The guide rail assembly 81 is connected to the mounting ring 7 and is located on the side where the limiting opening 71 is located. The pair of pressing blocks 83 are slidably disposed in the guide rail assembly 81. The positive and negative lead screw 82 is connected to the pair of pressing blocks 83 by a threaded engagement. Rotating the positive and negative lead screw 82 can drive the pair of pressing blocks 83 to move closer or further apart along the guide rail assembly 81. When the pair of pressing blocks 83 move closer together, the top of the pressing blocks 83 can extend into the mounting ring 7 through the limiting opening 71 and engage in the slot.

[0040] In this embodiment, a pair of compression blocks 83 are symmetrically arranged. Rotating the forward and reverse screws 82 drives the pair of compression blocks 83 to move closer to each other along the guide rail assembly 81, causing the compression blocks 83 to move closer to the mounting ring 7. As the pair of compression blocks 83 move closer to each other, the top of the compression blocks 83 enters the limiting port 71. Continuing to rotate the forward and reverse screws 82, until the top of the compression blocks 83 is embedded in the slot on the connector 4, completes the mechanical locking between the connector 4 and the mounting ring 7. When it is necessary to release the mechanical locking between the connector 4 and the mounting ring 7, the forward and reverse screws 82 are rotated in the opposite direction, driving the pair of compression blocks 83 to move away from each other along the guide rail assembly 81 until the top of the compression blocks 83 leaves the mounting ring 7. The limiting structure 8 in this embodiment replaces the traditional bolt fastening method, realizing tool-free quick disassembly and assembly of the connecting wire 3 and the carbon brush holder 5, significantly improving replacement efficiency and avoiding delays caused by lack of tools.

[0041] Among them, such as Figure 4 and Figure 5 As shown, the guide rail assembly 81 includes a pair of support plates 811 and a pair of guide rails 812. The pair of support plates 811 are respectively connected to the end faces of both ends of the mounting ring 7. The top of the support plate 811 is arc-shaped, conforming to the curvature of the inner wall of the mounting ring 7. The top of the support plate 811 is flush with the inner wall of the mounting ring 7. The pair of guide rails 812 are respectively disposed on the pair of support plates 811 and are symmetrical to each other. An extrusion block 83 is disposed between the pair of support plates 811. Sliding grooves 831 are respectively provided on opposite sides of the extrusion block 83. The extrusion block 83 is connected to the pair of guide rails 812 through the sliding grooves 831.

[0042] To make the movement of the extrusion block 83 on the guide rail 812 smoother, this embodiment coats the inner wall of the groove 831 with a friction-reducing coating. Furthermore, in this embodiment, the groove 831 and the guide rail 812 are in a clearance fit.

[0043] like Figure 4 and Figure 5 As shown, the guide rail 812 in this embodiment has a T-shaped cross-section, and the slide groove 831 also has a T-shaped cross-section, which are compatible. The T-shaped guide rail 812 and the T-shaped slide groove 831 work together to provide both guidance and limiting functions.

[0044] The guide rail assembly 81 of this embodiment includes a pair of support plates 811 and a pair of guide rails 812. The pair of support plates 811 are connected to both ends of the mounting ring 7, and a receiving space is formed between the pair of support plates 811. Guide rails 812 are respectively provided on both sides of the receiving space. A pair of pressing blocks 83 are disposed in the receiving space and are connected to the guide rails 812 through a sliding groove 831. This arrangement makes the installation of the pressing blocks 83 more stable and secure.

[0045] Among them, such as Figure 4 and Figure 5As shown, the top surface of the extrusion block 83 is inclined and has a certain curvature. The top surface of the extrusion block 83 is adapted to the shape of the slot.

[0046] Because the mounting ring 7 in this embodiment is a circular ring, and the top surface of the extrusion block 83 is inclined and has a certain curvature, it can adapt to the limiting port 71, so that the extrusion block 83 can freely enter and exit the limiting port 71 from both sides, and can perfectly cooperate with the slot on the connector 4 to lock the connector 4.

[0047] Among them, such as Figure 4 and Figure 5 As shown, knobs 821 are provided at both ends of the positive and negative lead screws 82. The surface of the knobs 821 is provided with an anti-slip layer.

[0048] like Figure 4 and Figure 5 As shown, the anti-slip layer in this embodiment is a diamond-shaped grid of protrusions, which are set on the circumferential surface of the knob 821.

[0049] In this embodiment, a pair of extrusion blocks 83 are driven to move by a positive and negative lead screw 82, which enables the extrusion blocks 83 to operate stably. At the same time, the positive and negative lead screw 82 drives the pair of extrusion blocks 83 to move, which has a self-locking capability and can effectively fix the joint 4 through thread self-locking.

[0050] In this embodiment, knobs 821 are provided at both ends of the positive and negative lead screws 82 to facilitate rotation of the positive and negative lead screws 82 to drive a pair of extrusion blocks 83 to move.

[0051] Figure 6 This is an exploded view of the snap-fit ​​structure 2 provided in this embodiment. Wherein, as shown... Figure 6 As shown, the snap-fit ​​structure 2 includes: a mounting hole 21, a snap-fit ​​bead 22, and a spring 23. The mounting hole 21 is located on the side of the carbon brush body 1. The snap-fit ​​bead 22 is retractably disposed in the mounting hole 21. The spring 23 is disposed in the mounting hole 21 and connects the snap-fit ​​bead 22 to the bottom of the mounting hole 21. The snap-fit ​​bead 22 protrudes from the mounting hole 21 under the support of the spring 23 and snaps into the snap-fit ​​slot 61.

[0052] like Figure 3 and Figure 6 As shown, the locking bead 22 is semi-circular. Its flat side connects to the spring 23, while its spherical side protrudes from the mounting hole 21. This design makes the connection between the spring 23 and the locking bead 22 more stable and reliable, and allows the locking bead 22 to smoothly engage in the bayonet 61.

[0053] In this embodiment, the connection between the carbon brush body 1 and the fixing part 6 is achieved through the cooperation of the locking bead 22 and the spring 23. When installing the carbon brush body 1, simply insert the carbon brush body 1 into the fixing part 6. When the position of the locking bead 22 corresponds with the locking slot 61, the locking bead 22 protrudes from the mounting hole 21 under the support of the spring 23 and is locked in the locking slot 61. When disassembling the carbon brush body 1, simply press down on the locking bead 22 to release the lock, facilitating the installation and disassembly of the carbon brush body 1.

[0054] Among them, such as Figure 1 and Figure 6 As shown, the snap-fit ​​structure 2 also includes a strong magnetic plate 24. The snap-fit ​​bead 22 is made of metal. The strong magnetic plate 24 is detachably disposed at the end of the snap-fit ​​opening 61 away from the carbon brush body 1. The strong magnetic plate 24 attracts the snap-fit ​​bead 22 into the mounting hole 21.

[0055] In this embodiment, the strong magnetic plate 24 has an arc-shaped groove on the side facing the bayonet 61, and the spherical side of the card bead 22 can be inserted into the arc-shaped groove.

[0056] In this embodiment, the magnetic attraction between the card 22 and the strong magnetic plate 24 achieves a double locking between the carbon brush body 1 and the fixing part 6. When the carbon brush body 1 is inserted into the fixing part 6, the card 22 automatically springs into the slot 61, while the strong magnetic plate 24 attracts the card 22 to prevent it from falling off due to vibration. This simplifies the alignment and installation steps of the carbon brush body 1 and ensures the stability of the carbon brush body 1 during operation.

[0057] Figure 2 This is a schematic diagram of a carbon brush holder 5 provided in this embodiment. Wherein, as shown... Figure 1 and Figure 2 As shown, the fixing part 6 includes a support arm 62, a fixing frame 63, and a driving device. One end of the support arm 62 is hinged to the carbon brush holder 5 via a pivot 64. The fixing frame 63 is located at the end of the support arm 62 away from the carbon brush holder 5. A bayonet 61 is provided on the side wall of the fixing frame 63. The carbon brush body 1 is installed in the fixing frame 63. The driving device is connected to the support arm 62. The driving device can drive the support arm 62 to rotate around the pivot 64 between a first position and a second position. When the support arm 62 is in the first position, the carbon brush body 1 abuts against the slip ring. When the support arm 62 is in the second position, the carbon brush body 1 moves away from the slip ring.

[0058] It should be noted that, Figure 1 The position of the support arm 62 shown is the second position. Figure 1 The first position is obtained by rotating the position shown 90° clockwise (downward) around the axis of rotation.

[0059] The fixing part 6 in this embodiment includes a support arm 62, a fixing frame 63, and a driving device. The driving device can drive the support arm 62 to rotate around the rotating shaft 64 between a first position and a second position, which allows the carbon brush body 1 to switch freely between the working position and the non-working position, making it more flexible and convenient to use, and facilitating the disassembly and installation of the carbon brush body 1.

[0060] Figure 3 This is a schematic diagram of the structure of a carbon brush body 1 provided in this embodiment. Wherein, as shown... Figure 1 and Figure 3 As shown, the carbon brush body 1 includes: a brush block 12 and a brush body 11 connected to each other. The end of the brush block 12 away from the brush body 11 is used to contact the slip ring. The snap-fit ​​structure 2 and the connecting wire 3 are located on the brush body 11.

[0061] The carbon brush body 1 of this embodiment includes a brush block 12 and a brush body 11 connected to each other. The brush block 12 is the core component and is used to contact the collector ring. The brush body 11 is used to fix the brush block 12 and to make the brush block 12 connected to the connecting wire 3.

[0062] Among them, such as Figure 1 and Figure 3 As shown, connector 4 is cylindrical. The outer diameter of connector 4 matches the inner diameter of mounting ring 7. A slot is located on the side of connector 4. Connecting wire 3 is connected to the end face of connector 4.

[0063] In this embodiment, the shape of the connector 4 is adapted to the mounting ring 7, which makes the connection between the connector 4 and the mounting ring 7 tighter and more secure.

[0064] The above provides a detailed description of the easily replaceable carbon brush structure of this embodiment. The following section explains its working principle:

[0065] When installing connector 4 onto mounting ring 7, first insert connector 4 into mounting ring 7, then manually rotate the positive and negative screws 82 to drive the pressing blocks 83 on both sides of mounting ring 7 to move along guide rail 812 to move closer to each other until the inclined surface of the top of the pressing block 83 extends into the inner side of mounting ring 7 through the limiting port 71 and is embedded in the slot on the side of connector 4. Then stop rotating the positive and negative screws 82. At this time, the self-locking of the threads of the positive and negative screws 82 achieves the locking of connector 4 and mounting ring 7. Subsequently, push carbon brush body 1 into fixing frame 63 until the card 22 is embedded in the slot 61 on fixing frame 63. At the same time, strong magnetic plate 24 attracts card 22, so that the spherical side of card 22 is embedded in the arc groove on strong magnetic plate 24, forming a double locking of spring 23 preload and strong magnetic plate 24 magnetic attraction. Finally, the carbon brush body 1 is stably fixed on carbon brush bracket 5, ensuring that it maintains reliable contact with slip ring.

[0066] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0067] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above are only preferred embodiments of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A carbon brush structure that is easy to replace, characterized in that, include: Carbon brush body and carbon brush holder; The carbon brush body includes a snap-fit ​​structure and a connecting wire; the free end of the connecting wire is provided with a connector; the connector is provided with a slot. The carbon brush holder includes a fixing part, a mounting ring, and a limiting structure; the fixing part is provided with a locking slot; the side wall of the mounting ring is provided with a limiting opening; the limiting structure is retractably disposed in the limiting opening; The carbon brush body is mounted on the fixing part, and the snap-fit ​​structure is retractably snapped into the snap-fit ​​slot; the connector is inserted into the mounting ring, and the slot corresponds to the limiting port; the limiting structure extends into the mounting ring through the limiting port and snaps into the slot to fix the connector in the mounting ring.

2. The easily replaceable carbon brush structure according to claim 1, characterized in that, The limiting structure includes: a guide rail assembly, positive and negative lead screws, and a pair of pressing blocks; The guide rail assembly is connected to the mounting ring and is located on the side where the limiting port is located; A pair of the extrusion blocks are slidably disposed in the guide rail assembly; The positive and negative lead screws are connected to the pair of extrusion blocks via threaded engagement; rotating the positive and negative lead screws can drive the pair of extrusion blocks to move closer to or further away from each other along the guide rail assembly; When a pair of the extrusion blocks approach each other, the top of the extrusion block can extend into the mounting ring through the limiting port and engage in the slot.

3. The easily replaceable carbon brush structure according to claim 2, characterized in that, The guide rail assembly includes a pair of support plates and a pair of guide rails; A pair of support plates are respectively connected to the end faces of both ends of the mounting ring; the top of the support plate is arc-shaped, which is adapted to the curvature of the inner wall of the mounting ring; the top of the support plate is flush with the inner wall of the mounting ring. The pair of guide rails are respectively disposed on the pair of support plates and are symmetrical to each other; The extrusion block is disposed between a pair of support plates; a sliding groove is provided on each of the opposite sides of the extrusion block; the extrusion block is connected to a pair of guide rails through the sliding groove.

4. The easily replaceable carbon brush structure according to claim 2, characterized in that, The top surface of the extrusion block is inclined and has a certain curvature; the top surface of the extrusion block is adapted to the shape of the slot.

5. The easily replaceable carbon brush structure according to claim 2, characterized in that, The positive and negative lead screws are respectively equipped with knobs at both ends; the surface of the knobs is provided with an anti-slip layer.

6. The easily replaceable carbon brush structure according to claim 1, characterized in that, The snap-fit ​​structure includes: mounting holes, snap-fit ​​nuts, and springs; The mounting hole is located on the side of the carbon brush body; The card is retractably disposed in the mounting hole; The spring is disposed in the mounting hole and connected between the card and the bottom of the mounting hole; The locking bead protrudes from the mounting hole under the support of the spring and engages in the locking slot.

7. The easily replaceable carbon brush structure according to claim 6, characterized in that, The snap-fit ​​structure also includes a strong magnetic plate; The card is made of metal. The strong magnetic plate is detachably disposed at the end of the bayonet away from the carbon brush body; the strong magnetic plate attracts the card into the mounting hole.

8. The easily replaceable carbon brush structure according to claim 1, characterized in that, The fixing part includes: a support arm, a fixing frame, and a driving device; One end of the support arm is hinged to the carbon brush holder via a pivot. The fixing frame is located at the end of the support arm away from the carbon brush holder; the bayonet is located on the side wall of the fixing frame; the carbon brush body is installed in the fixing frame; The drive device is connected to the support arm; the drive device can drive the support arm to rotate around the pivot between a first position and a second position. When the support arm is in the first position, the carbon brush body abuts against the slip ring; when the support arm is in the second position, the carbon brush body moves away from the slip ring.

9. The easily replaceable carbon brush structure according to claim 1, characterized in that, The carbon brush body includes: brush blocks and brush bodies connected to each other; The end of the brush block furthest from the brush body is used to contact the collector ring; The snap-fit ​​structure and the connecting wire are located on the brush body.

10. The easily replaceable carbon brush structure according to claim 1, characterized in that, The connector is cylindrical; the outer diameter of the connector is adapted to the inner diameter of the mounting ring; the slot is located on the side of the connector; the connecting wire is connected to the end face of the connector.

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